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| Home > Publications database > Ein Detektorsystem für den zweidimensional ortsbestimmenden Nachweis von Neutronen und Gammaquanten |
| Home > Publications database > Ein Detektorsystem für den zweidimensional ortsbestimmenden Nachweis von Neutronen und Gammaquanten |
| Book/Report | FZJ-2018-02910 |
1988
Kernforschungsanlage Jülich, Verlag
Jülich
Please use a persistent id in citations: http://hdl.handle.net/2128/18493
Report No.: Juel-2222
Abstract: Many applications in scientific research and industry today demand for position sensitive detector systems with a large sensitive area, which are capable of detectingx-ray, gamma-ray or neutron radiation. Examples include the small-angle neutron scattering experiments in the material sciences and the Gamma Camera for medicaldiagnosis. While the well-known Anger Camera utilizes a large number of photomultiplier tubes, which are arranged in a regular array behind a scintillation crystal, the new detector system, which is presented here, makes use of electron optics to transfer the scintillation image of a large scintillation crystal onto a small position detector. Because of this, only few photodetectors are required for position readout, associated with only a small number of amplifier chains and a very simple position reconstruction algorithm. The reduced complexity of the readout electronics ultimately leads to an improved maintainability and reliability of the detector system. A prototype of the new detector system was built and tested. After giving an overview on already known and realized detector configurations, the basic considerations, which led to the final detector design, will be explained. Different methods of detector readout and position determination are discussed. Measurement results which were obtained with the prototype detector system are presented and explained by means of simulation calculations. Finally, suggestions for further developments are given.
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